Question 41567
Perimeter's all the sides added up so we have
(2x - 5)+(3x + 1)+(4x + 2)  which we can safely convert to
2x-5+3x+1+4x+2  change the order around a little..
2x+3x+4x-5+1+2  solve
9x-2
yup, you got it right